David john morgan



(No Modem -11. J. MORGAN.

LOOKING FIRE BAR. No. 451,652. Patented May 5,1891.

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UNITED STATES ATENT rrrce.

,DAVID JOHN MORGAN, OF CARDIFF, ENGLAND.

LOCKING FIRE-BAR.

SPECIFICATION forming part of Letters Patent No. 451,652, dated May 5,1891. ppli ation fi October 22, 1890- Serial No. 368,939. (No model.)Patented in England March 3, 1890, No. 3,344.-

To all whom it may concern:

Be it known that I, DAVID JOHN MORGAN, a subject of the Queen of GreatBritain, and a resident of Fitzhamon Embankment, Cardiff, in the countyof Gla1norgan,England, haveinvented certain new and useful Improvementsin Fire-Bars and Furnace-Grates, (for which I have obtained a patent inGreat Britain, No. 3,344, dated March 3, 1890,) of which the followingis a full, clear, and exact specification.

My present invention relates to furnacegrates and fire-bars usedtherefor.

Hitherto fire-bars when arranged and fitted in the ordinary manner wereeasily, and therefore frequently, forced upward and out of place whenthe stoker picked between said bars in order to remove clinker or ash,so as to free the grate for the passage of air and the removal of burneddust, and in consequence of said bars becoming so disarranged or forcedfrom their original positions they immediately exposed a larger surfaceto the direct action of the fire, and so became more easily burned andnecessarily shorter-lived than if theyat all times only exposed theirupper faces or tops to the fire.

The object, therefore, of my present invention is to so construct thefire-bars and arrange the furnace-grate that the fire-bars becomeeffectually locked in their normal positions, and consequently theycannot be disarranged or forced out of original positions by beingpicked or by means of the fire being roughly stoked.

To obtain the before-described obj eat, therefore, I construct thefire-bars and arrange the furnace-grate in the manner set forth in theaccompanying drawings,which are to be taken as part of thisspecification and read therewith.

Figure 1 is a longitudinal sectional elevation of my improved fire-bars,showing the looking arrangement thereof. Fig. 2 is a plan of thefurnace-grate fitted with my improved fire-bars, and Fig. 3 is across-sectional elevation of the same. Figs. 4, 5, and 6 arelongitudinalsectionalelevations,respectively, of modifications of myimproved fire-bars and locking arrangements. Figs. 7, 8, and 9 aresectional elevations of portions of the aft firebars, illustratingmodified arrangements of securing or looking the ends of said fire-bars.

Figs. 10, 11, and 12 are longitudinalsectional elevations of modifiedforms or means of interlocking the fire-bars in the center of thefurnace-grate; and Fig. 13 is an enlarged transverse-sectional elevationof the form of firebar I prefer to employ with my present improvements.

Similar letters of reference denote corresponding parts in all theviews.

Referring to Figs. 1, 2, and 3, the fire-bars A and B are preferablylaid in a horizontal position fore and aftof the furnace-grate. Asshown, they are fitted or laid upon a specially-constructedframe F,composed of two sides g and three cross-pieces h,j, and k. Each of thefore set of bars A, Fig. 1, has its front end a beveled, so that it mayrest or bear freely upon the beveled part is of the front cross-piece 7cof the frame F, and the opposite end of each said bar A is rabbeted asshown at a Fig. 1, the lower portion of said end being formed with aV-shapedrecess or groove 66 ,111 order that it may fit upon or against acorresponding V-shaped'projection j, secured to or made with the middlecrosspiece j of frame F. The rabbeted part a of each bar A, Fig. 1,rests upon the rabbeted part b of the fore end of each aft bar B, andbeneath said rabbeted part b is a projection b which rests or fitsfreely into a suitable channel or groove j formed in the middlecrosspiece j of frame F. The back end 12 of each aft bar B is formedwith a V-shaped indent or groove and the cross-piece 71, is of a similarshape in cross-section, as shown, Fig. 1, in order that the ends 19 maybear or rest firmly thereon.

In fitting up my improved furnace-grate, Figs. 1, 2, and 3, the aft barsB are first placed in position upon the frame F, their ends I) restingagainst or upon the cross-piece b and their rabbeted fore ends upon themiddle cross-piece j. After being so placed the fore bars 'A are thenarranged so that their rabbeted ends 0, rest upon the rabbeted ends I)of aft bars B and their beveled ends a upon the beveled part 713' ofcross-piece it.

It will now be obvious that the aft set of fire-bars B cannot be removedunless the bars A are in the. first instance removed, as the lattereffectually lock the former. Therefore in order to complete the fulllooking or securing in position of the whole of the fire'bars A and I Iemploy a cross bar or plate M, which I place over the upper part offront end a of the fire-bars A, and I fasten the same down to the frameF either by bolts, rivets, screws, or by any other ordinary and suitablemethod. Referring to Fig. 4, the front bar A is made with its end agrooved, and the cross-piece 7a is arranged with a V-shaped projectionis, in order that the ends a may fit or rest thereon, and in thisarrangement the centercross-piece j has a projection j formed at the aftside thereof, and the rabbeted part Z) of the barB rests upon therabbeted part c of the bar A. In order to complete the locking of thebars A and B, the plate M is secured to the frame F over the ends 0 ofthe bars 13. As shown in this arrangement, it is necessary to remove thebars 13 before the bars A can be taken out from the furnace-grate.

IVith reference to Fig. 5, the projection is is attached to thecross-piece 7c of frame F by means of bolts 7c, and the end If of aftbarB fits on the V-shaped cross-piece 7L. In this case it is necessaryto remove the projection h before the bars can be unlocked or taken outfrom the furnace-grate.

Referring to Fig. 6, the cross-piece j is made fiat upon its top and theprojection j is rounded, and the cross-piece h is also rounded, asshown.

IVith reference to Fig. 7, the cross-piece 71 is made with a V-shapedgroove 7L, and the bar B is formed with a correspondiugly-shapedprojection, which fits therein.

In Fig. 8 the cross-piece h is formed with a spigot 7b, and the end 11of bar 13 is formed with a suitable corresponding hole or faucet to fitthereon; and in Fi 9 the end of bar B has a tongue Zr, and thecross-piece his grooved at 7t, in order toreceivc the same.

Figs. 10, 11, and 12 represent the interlocking of the fire-bars A and Bwhere they meet in the center of t e furnacegrate, rcspeetively.

In Fig. 10 the bar A is made with a spigot a and the bar B with a faucetI), as shown.

In Fig. 11 the bar A is made with a projection a, and the cross-piece jis arranged in two pieces, which are riveted or bolted to gether so thata space is left between, and the end I) of bar B is lipped or formedwith a V-groovc, in order to fit over the end of of bar A and under theprojection j, formed on the cross-p1ece j.

In Fig. 12 the bar B has a V-groove b and also a rabbeted portion 1),the latter resting upon the rabbeted part (t of the bar A. Inconsequence of the locking of fire-bars in the manner hereinbeforedescribed with reference to Figs. 1 to 12, it becomes impossible evenunder rough stoking or usage to disturb or disarrange the bars whenremoving the clinker orstirring the fire. Therefore a much lighter andthinner lire-bar in all cases may be employed in my improvedfurnace-grate than can safely and economically be so employed when usingfurnace-grates arranged in the ordinary manner, and for reasonshereinbefore stated considerable economy is effected in using fire-barsand furnace-grates constructed and arranged according to my presentinvention.

llaviug now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is- 1. In grate-bars for furnaces and the like, thecombination,with a series of interlocking fore and aft bars, one set ofthese bars having indents or sockets, of a frame for supporting andholding the outer ends of said bars and a cross-pieee for supporting theinner ends of the bars and having a projecting portion adapted to entersaid indents or sockets, for the purpose set forth.

2. In grate-bars for furnaces and the like, the combination, with aseries of interlocking fore and aft bars, one set of these bars havingindents or sockets at their inner ends and both sets having sockets andprojections at their outer ends, of a cross-piece for supporting saidinner ends and having a projection adapted to enter said indents orsockets, and the frame for engaging said outer ends, one portion ofwhich is provided with suitable locking devices, whereby when one seriesof bars are inserted the second series are adapted to lock the firstseries and be held in turn by the locking devices on the frame.

In grate-bars for furnaces and the like, the combination, with thecross-piece having the projection and groove, as described, and with theframe, one portion of which is provided with a projection and the otherportion is provided with a socket or groove formed by the frame and adetachable locking-piece, of a series of interlocking fore and aft bars,one set having a projection adapted to enter the groove in thecross-piece and with an indent for the projection on the frame and theother set having an indent for the projection on the cross-bar, and aprojection for the groove formed by the frame and locking-piece, for thepurpose set forth.

In testimony that I claim the foregoing I have hereunto set my hand this16th day of September, 1800.

DAVID JOIIN MORGAN.

Witnesses:

CHARLES A. NORTH,

1S3 A cwpm't Rm, Cttrdilf. A. '1. MORGAN,

29 Queen St, Cardiff.

IOC

